| 摘要 |
PROBLEM TO BE SOLVED: To provide an acoustic device capable of suppressing a vibration generated at a housing and reducing a standing wave of sound generated in the housing with a simple configuration. ! SOLUTION: An acoustic tube 10 is positioned in a housing 1 of a speaker. The acoustic tube 10 is a hollow tube having opening ends 11 and 12, and attenuates a standing wave of a specified frequency generated at the housing 1. A part of a side surface of the acoustic tube 10 is fixed to a wall surface 1L of the housing 1 by a coupling section 13. With this configuration, vibrations having mutually reverse phases in a specified frequency are generated at the acoustic tube 10 and the wall surface 1L of the housing 1. The acoustic tube 10 functions as a dynamic vibration absorber that attenuates a vibration of a specified frequency generated at the housing 1. ! COPYRIGHT: (C)2015,JPO&INPIT |
